Locking device for stove-doors.



E. A. SCHREIBER.

LOCKING DEVICE FOR STOVE DOORS.

APPLICATION FILED 1AN.25. 1915.

SHEETS-SHEET 1- ;ed Feb. 8,1916; I 171 2 0 r 9 v Pateni f g [a VEENTOR I A TTORNE Yb- E. A. SCHREIBER. I I LOCKING DEVICE FOR STOV E moons.

APPLICATION FILED IAN. 25, 1915- 1,171,260. I 1 Patnted'Feh 8,1916. V 2SHEETS-SHEET21 WITNESSES:

Tm: COLUMBIA PLANOGIiAPH 120.. WASHINGTON. D. C.

, a a INIZAIITQR. v

Byg a ATTORNEYS.

were: H. GOLD; on

lt dr eb aiaie.

e catch is formed" ate whenever the lly, though the plac l Y he catch is such that eipl'ate 25 when, in ;he stove, the door is ily understood from at of the stove which 22 baekwardly will eenthe plate 25 and 6a 1 that the weight 27 tch approximately e latch bar 22 has a which is notched as ith a reversible lock )se 32 adapted auto-; a notch 30 when the e latch bar. 22 within tion 24.. The dog 8l pivot,3 3 projecting for the purpose ofv V lay be reversedinto" 7 [1 in dotted lines-in L a wreck the. inverhrow-both the catch nof locking engager 22. "The latch bar 0 leave gthe notch of as are provided for underisuch circumr comprise a gprojec rtured as at 35. and

a 20 at a point near V .pertured lug 36- cara position that when aperture of the lug the projection; and lly indicated at .37,

38 ,(Fig. 4) fitting auresiof the. lug and ably terminating at ity to the upper edge" igs. 1 and 9)." The erably separable igthe head38 menweighted extension the bolt by gravity," i LBiOWGl end of the lrts assume'the inatedin Fig. 9, the" from 'the projection l to strike the "adja and'start it moving,

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ne srA'rE A ENT Q EDWARD A. SCI-IBEIBEIR, or cmcaoo, ILLINOIS, ASSIGNOR To Be J 1'. CHICAGO, ILLIrioIs' To all whom it may concern:

. Be it known that I, EDWARD A.

BER, a citizen of the United States, residing at. Chicago, in the county of Cook and" State of Illinois, have invented certain new and.

useful Improvements Locking I Devices for stove Doors, of whichtheyfollowingis a specification.

My invention relates to locking devices for stove doorsand the like and has for its object the, provision of. means for holding'a stove door closed regardless of the various positions which the stove may assume as,-

for instance, in a railroad wreck, while at the same time permitting the quick and easy opening of the door at will. r

With the above andv other objects in View,

this invention consists substantially in the l combination, constructionfand arrangement 20 preferably at .a point behind and below;

5 the bar 22, being provided with a weight" of parts all as hereinafter described, shown in the accompanying drawings, which illustrate the 7 preferred embodiment of the invention and more particularly set forth the subjoined claims.

In the drawlngs z Figure 1 a front el e-l,

vationofa stove door embodying-my invention showing the sameinits normal upright position; Fig. 2 is an end view thereo f; Fig. 3 is: a seetion with parts broken away taken on line 3-3 of Fig. 1; Figs. 4 and 5 are views in perspective oftwo elements form: ing together a locking bolt employed in my invention; Fig. 6 is-a perspective .view of a reversible dog employed inimy invention; Fig.7]? isa vlew-of the parts shown in Fig.

2 illustrating the positions which theiparts' assume when the stove falls face downward f Fig. 8 isfa similar view showing the door and its frame turned face upward Fig. -9.

is a' similar view showing the door andits frame. inverted F1g. 10 1s a partial view of nay invention in perspective' illustrating' a locking bolt andlcir'tain of the parts asso;

cia'tedtherewith. Reference numeral .20 lndicates a. stove door frame having'the customary door open.-

ing' and provided with a hinged :door 21,

The door carries alatch bar22 pivoted at 23 and engaging a notched projection 24:

formed upon the frame, in the ordinary and well known manner.' A- catch plate 25 is carried by the latch bar upon its rearward side and .a catch 26 is'pivoted to the frame ocum nnvicn For. s'rovE-nooRs.

Specification of Letters Patent. i 1 ,1 Application filed January 25,1915. Serial No. 4,268.

V 27 below its 'pivot. :Th

to engage; the catch pl: stove istilted backward ing of the pivot 28 oft the catch will clear th" the normal position-of 1 closed. It will beread Fig. 3 that anyfmoveme:

carries the latch bar cause engagement b6tW the catch for thereasoi will vmaintain the 0:

vertical.

As seen in Fig. 2,. th rearward extension 29 at 30 for engagement w ing dog. 31 havinga n matically. to engage thr door is closed,to lock th the notch of the projecl swings freely upon "a from, the frame 20 and opening thev door, it-n the position illustrated Fig.;2..- r

It ispossible that ii". sion of the stove will t 26 .and the; dog 31' "out ment with the latch. ba: being free, therefore, t the 7 projection 24, mea:

holding the door c-closed stances. These means.

iQ 3 i'g 1 re formed upon the mm the door opening an a ried by thedoor in sue] the door is closed the. registers below that of a locking bolt genera: provided with a head freely within the aperi projection, and, prefer its lower end in proxim: of the latch. bar 22' (F bolt. hastwo parts, pref shank portion 39" havir tioned. (Fight), and a 40 (Fig' 5) "for sliding whichis secured to tl shank. J When the pa verted position illllStI'l lat h a n. dropping. 24 may thus be caused cent end of the bolt 37 if, for any reason the bolt sticks in its bearings.

In operation, the door 21 is closed and latched by means of bar 22 in the ordinary and well known manner. This causes automatic engagement between the extension 29 and the dog 31, resulting in the automatic locking of the latch. If the stove is so tilted as to move the catch plate 25 toward the catch 26-that is, backwardly-the nose of the dog will swing clear of the extension 29 but there will be simultaneous engagement between the plate 25 and catch 26 with the result that the latch bar 22 remains locked in the notch of the projection 24:. Should the stove be thrown upon its face, as in Fig. 7, the dog 31 will hold the latch bar locked, and should it be thrown face upward, as in Fig. 8, the catch 26 will cooperate with plate to keep the latch bar locked. If the stove be inverted, as in Fig. 9 and the dog and catch both disengaged from the latch bar, the bolt 37 will drop by gravity into the aperture of the projection 34:, as illustrated, thus automatically locking the door closed. If, for any reason, the bolt 37 should stick in its bearings, the latch bar in dropping out of the notch of the projection 24 will strike it a sharp blow and loosen it. hen it necessary to open the door, the dog fil is reversed into the dotted line position of Fig. 2, whereupon the latch bar 22 may be raised.

I claim:

1. The combination in a structure to be latched of a latch bar, and a pivoted weighted catch placed to clear said bar in its normal position when closed and to engage the bar to lock it in closed position when the structure is tilted backwardly.

2. The combination in a structure to be latched of a latch bar, a catch plate thereon, and a pivoted catch placed to clear said plate in the normal position of the latch bar when closed and to engage the plate to lock the closed latch bar when the structure is tilted backwardly.

8. The combination in a structure to be latched of a latch bar, a catch plate thereon, and a pivoted catch movable in a plane transverse to the plane of the latch bar and placed to clear said plate in the normal position of the latch bar when closed and to engage the plate to lock the closed latch bar when the structure is tilted backwardly.

4:. The combination in a structure to be latched of a latch bar, a catch plate thereon, and a pivoted weighted Catch placed to clear said plate in the normal position of the latch bar when closed and to engage the plate to lock the closed latch bar when the structure is tilted backwardly.

5. The combination in a structure to be latched of a latch bar, a catch plate thereon, and a swinging, weighted catch placed to clear said plate in the normal position of the latch bar when closed and to engage the plate to lock the closed latch bar when the structure is tilted backwardly.

6. The combination in a structure to be latched of a latch bar, a catch plate upon the rearward side thereof, and a weighted catch pivoted at a point below and rearwardly of said plate and formed to clear said plate in the normal position of the latch bar when closed and to engage the plate to lock the closed latch bar when the structure is tilted backwardly.

7. Tn a stove, the combination with a door frame and a door therefor, of a pivoted latch carried by the door, a catch plate carried upon the rearward side of said latch bar, a pivot pin upon said frame positioned below and rearwardly of the latch plate, and a weighted catch mounted upon said pivot pin and formed to clear said plate in the normal position of the latch bar when closed and to engage said plate to lock the latch bar when the stove is tilted backwardly.

8. The combination in a structure to be latched of a latch bar, a reversible locking dog movable in a plane transverse to the plane of the latch bar, which automatically locks the latch bar when the bar is closed and the structure is in its normal position, a

catch plate upon the latch bar, and a pivoted catch placed to clear said plate in the nor mal position of the latch bar when closed and to engage the plate to lock the closed latch bar when the structure is tilted bachwardly.

9. The combination in a structure to be latched of a latch bar, a reversible locking dog adapted normally to automatically lock the latch bar in closed position and to re lease the latch bar when said structure is a tilted backwardly, a catch plate upon said bar, and a pivoted catch placed to clear said plate in the normal position of the latch bar when closed, and to engage the plate to lock the closed latch bar when the structure is tilted backwardly.

10. The combination in a structure to be latched of a latch bar formed with a notch, a pivoted reversible locking dog having a nose adapted to engage said notch automatically, when the bar is closed, to lock the latch bar, and positioned to release the latch bar when said structure is tilted backwardly, a catch plate formed upon the rear side of the latch bar, and a weighted catch pivoted rearwardly of the latch bar and placed to clear said plate when said dog is in looking engagement with the bar and to engage said plate to lock the bar in closed position when said dog releases the bar. I

11. Tina stove, the combination of a door frame; a door mounted thereon; automatic means for holding the door closed regardless of the position of the stove, comprising a pivoted latch bar upon the door, a notched stud upon the frame for engagement by the latch, a pivoteddog movable in a plane transverse to the plane of the latch bar and adapted to lock the latch bar in closed posi tion when the stove is upright or tilted forwardly on its base, a catch pivoted upon the frame movable in a plane transverse to that of the latch bar and formed tov clear the latch bar when said dog is in locking position and to engage the latch bar to lock it when said stove is tilted backwardly, an apertured projection upon said frame adj a;- cent the door opening thereof, a lug upon the door having an aperture registering below the aperture of said projection during the closed position of the door, and a bolt carried by said lug and slidable by'gra-vity into the aperture of said projection when" said stove is inverted.

12. In a stove, the combination ofja door frame; a door mounted thereon; and automatic means for holding the door closed regardless of the position of said stove, comprising a pivoted latch bar upon the door, a

notched stud upon the frame for engagement by the latch, a pivoted'dog movable in the plane transverse to the plane of the latch bar and adapted to' lock the latch bar in closed position when the stove is upright or v tilted forwardly on itsbase, a catch pivoted upon the framemovable in a plane transverse to that of the latch bar and formed to clear the latch bar when said dog is in looking position and toengage the latch bar to lock it when said stove is tilted backwardly, an aperture d projection upon said frame adjacent the door opening thereof, a lug upon the'door having an aperture registering below' the aperture of said projection during the closed position of the door,and

a bolt carried by said lug and slidable bygravity into the aperture of said projec 'tion' when the said stove is inverted, said bolt being so positioned as to be struck by the latch bar.

13. The combination with a door frame of a door mounted thereon, a pivoted latch bar for the door, and gravity operated means for holding the door closed when it is in-' verted comprising a sliding-bolt; saidlatch bar being placed to strike said bolt when the door is inverted.

14. In a stove, the combination with a door anddoor frame, of a latch barpivoted to the door and adapted to engagethe door frame, an element on the frame above the 'latch bar, when the door isclosed, which operates by gravity to hold the latch bar in engagement with the frame, when the stove is in normal position, a perforated lug at the upperedge'of the door, a lug on the upper edge of theframe having an aperture which registers with the perforation'in *the' lug on'the door, when the door is closed, and a bolt slidable in the lug on the door, the

weight adapted to move the bolt into ;the

"15.In a stove, the combination with a door and door frame, of a latch bar .piv

oted to-thei door and'adapted to engage the lower end of which is provided with a f aperture in the lug on the frame when the I stove is inverted.

door frame an element on the frame above the latch bar, when the door is'closed, which operates by gravity to hold the latch bar in engagement with the frame, when the stove is in normal position, a perforated lug at the upper edge of the door, a lug on the g 7 weight adapted to move the bolt into the aperture in the lug on the frame when -the stove is inverted, and a pivoted latch on the frame backofthe latch bar, when the door is closed,'which normally stands out j of the path of the latch bar but engages-the same when the stove istippedbackwardly.

16. In a stove, the combination with a door and door frame provided with a latch mechanism effective by the weight of its parts to hold the (10min engagement with v i the frame when the stove is in its normal position, of a perforated lug at the upper edge of the door, a lug on the upper part ofthe frame having an aperture w'hich registers with the perforation in said lug, when ';the door is closed, a bolt slidably arranged,

in the lug on the door, and a' weight on the' end of said bolt adapted to move the bolt into the aperture in the lug on the frame in case the stove is inverted;

'1' 7. Ina stove, the combination with a door and a door framev provided with a A latch mechanism efi'ective'by the weight of its parts to hold thedoor in engagement with the door frame when the stove is in its.

normal position, of a bolt mounted on the whichis out of contact with the door frame door, and adapted, when the stove is in door at"its upper edge, the upper end of when the stove is in its normal position, said 7' bolt being weighted, freely slidable upon the .11 5

verted, to fall by gravity into locking 'en-" gagement with the door frame.

g EDWARD A. SCHREIBER.

Witnesses:' V v L. A. FALKENBERG,

R.:KUEHN.

Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents I I Washington, 1L0. 

